Instead, Apple’s official repair procedure requires proprietary software tools, available only to Authorized Service Providers and members of Apple’s unlaunched Independent Repair Program. No sacrifices or incantations can overcome this. Trying to replace core Mac parts can trigger a lock-out. You can do a lot, but in the newest iPhones, you can’t restore Touch ID, install a new battery, or replace a screen without a warning.

No mere mortal, lacking Apple’s stamp of approval, can completely fix the company’s products. Edit (11/2/19): This post was updated to clarify and add information on more of Apple’s repair apps.